S. A. Kamaruddin, A. M. Yaakob, N. A. N. Md Nasir, and S. F. Abdul Rahman, “A Preliminary Study on Understanding the Consumptions of Therapeutic Essential Oils During COVID-19 Pandemic Among Adults Using Ann”, JTOM, vol. 16, no. 2, pp. 76–87, Dec. 2021, doi: 10.32890/jtom2021.16.2.7.